Oleic acid/oleylamine ligand pair: a versatile combination in the synthesis of colloidal nanoparticles

Abstract

A variety of colloidal chemical approaches has been developed throughout the last decades for the controlled synthesis of nanostructured materials in either water or in organic solvents. Apart from precursors,...

Colloidal Synthesis, Characterization, and Photoconductivity of Quasi-Layered CuCrS2 Nanosheets

“…Therefore, the nanosheet morphology can be attributed to using OLA as a surfactant. It is well established that OLA attaches preferentially to different facets of growing nanocrystals [ 28 , 29 , 30 , 31 ]. No appreciable morphological changes were detected by varying the time of the reaction.…”

Phonon-Mediated Nonradiative Relaxation in Ln3+-Doped Luminescent Nanocrystals

“…The use of surfactants in the synthesis of Ln 3+ -doped nanocrystals originates from the growing demand for optical materials at the nanoscale, with controlled morphology and size distribution. 174 For instance, Heer et al 170 succeeded in the preparation of uniform Ln 3+ -doped cubic-phase NaYF 4 (abbreviated as α-NaYF 4 ) nanocrystals in the presence of N-(2-hydroxypropyl)ethylenediamine and 1-adamantanecarboxylic acid, as the acid moieties bound to the particle surface (Figure 5b). Later, the monodispersed Ln 3+ -doped α-NaYF 4 nanocrystals were successfully prepared by Yi et al 175 and Wang et al 176 linoleic acid as the surfactant, respectively.…”

Ferromagnetic Ni Nanoparticle with Controlled Anisotropy: From Polyhedral to Planar Tetrapods

“…Numerous reaction conditions, such as the nature of the Ni precursors, 16 solvents, type, and concentration of ligands, 17 have been studied. For instance, isotropic spheres of various sizes were produced from Ni(acac) 2 in the presence of oleylamine/trioctylphosphine (TOP) 18 or oleic acid/oleylamine, 19 the role of this ligand pairs being recently extensively reviewed by Mourdikoudis et al 20 Using a reducing hydrogen atmosphere Ni cubes were grown in the presence of HDA and TOP as surfactants. 21 Regarding shape control, which is highly desired for surface-specific reactions, anisotropic nanoparticles were isolated in some rare cases.…”